WorksheetsHistory of Periodic Table
Total questions: 15
Worksheet time: 5mins
Name
Class
Date
1.
In the modern periodic table elements are arranged by:
a)
atomic mass
b)
atomic number
c)
valence electrons
d)
number of isotopes
2.
Who arranged the periodic table by increasing atomic number?
a)
Mendeleev
b)
Rutherford
c)
Bohr
d)
Mosely
3.
Why were there blank spaces left in Mendeleev's periodic table?
a)
He didn't know what to put there.
b)
Undiscovered elements not yet known.
c)
Multiple elements could have fit
d)
He forgot to add the elements in.
4.
Used the law of triads to make a list of elements
a)
Mendeleev
b)
Dobereiner
c)
Mosely
5.
Who was known as the father of the periodic table?
a)
John Newland
b)
Dimitri Mendeleev
c)
Antoine Lavoisier
d)
Johaan Dobereiner
6.
_______________ developed the first periodic table and arranged the elements in order of increasing atomic mass.
a)
Stevie Wonder
b)
Sasha Vujacic
c)
Dmitri Mendeleev
d)
James Mosely
7.
What property did Mendeleev use to organize his first periodic table?
a)
atomic number
b)
atomic mass
c)
alphabetical order
d)
chemical properties
8.
Moseley discovered that the ________ was the most fundamental property needed for organization.
a)
atomic mass
b)
mass number
c)
atomic number
d)
number of neutron
9.
2.Law of octaves was given by
a)
a.Meyer
b)
b.Mendeleev
c)
c.Newland
d)
d.Mosley
10.
What was Dmitri Mendeleev's greatest contribution to the history of the periodic table?
a)
He arranged all of the known elements by their atomic number
b)
He realised that there was a pattern of reactivity which repeated every 8 elements
c)
He predicted the existence (and properties) of new elements
d)
He identified the "law of triads" which became the groups
11.
Mendeleev classified elements based on not only atomic mass but what else?
a)
reactivity
b)
boiling points
c)
physical properties only
d)
chemical & physical properties
12.
A ___________ is an arrangement of elements in columns
a)
columns
b)
rows
c)
periodic table
d)
electron shell
13.
Each column in the periodic table is called a
a)
period
b)
group
c)
cluster
d)
unit
14.
Particles in an atom's nucleus that are neutral and have no charge are
a)
megatrons.
b)
electrons.
c)
neutrons.
d)
protons.
15.
How many elements does the periodic table currently have?
(Current = 2018)
a)
60
b)
118
c)
181
d)
227
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